Combined emergency and throttle valve.



. L. OUBELIO.

COMBINED EMERGENCY AND THROTTLE VALVE.

APPLICATION FILED JULY 7, 1910.

1,020,685, Patented Mar. 19, 1912.

Fig.4. so g- UL III Invenbor:

UNITED STATES PATE LUDWIG cUisELrc, or cnentor'rnnsuae,GERMANYQASSIGNOR. T0 ennnnan ELECTRIC compan A CORPORATION or NEW YORK.

COMBINED EMERGENCY AND THROTTLE VALVE.-

Specification of Letters Patent. I Patented lrIar, 19, 1912 Applicationfiled July 7,1910;v Serial No. 570,761;

To all whom it may concern: Beit known that I, LUDWIG CUBELIC, a subjectof the King Lot Prussia, residing at Charlottenburg, Germany, haveinvented certain new and 'useful Improvements in Combined Emergency andThrottle Valves, of which the following is a specification.

This invention relates to valves which combine the function of athrottle or stop valve and of an emergency valve so that one valve canbe used to regulate the flow from a given region to another underordinary conditions and also to shut ofl'the flow suddenly underemergency conditions or whenever it is desirable or necessary.

The object of the invention is the provision of an improved valve of thetype described which is simple in structure and efiic'ient and certainin its operation under all conditions. I

In the accompanying drawing illustrating .one of the embodiments of theinvention,

Figure 1 is asectionaLview of the valve;

Fig. 2 is a diagrammatic View partly in section of a portion of themeans for opening and closing the valve under ordinary circumstances;Fig. 3' is a diagrammatic view showinga speed responsive -,device fortripping the valve under an emergency condition; Fig. 4 is a detail viewshowing the connection between the two parts ofv the valve stem whensaid parts are in normal position; and Fig. 5 is a view similar to Fig.4- showing the relation of thejparts after the valve has been tripped.

The valve body or casing 4 has a diaphragm 5 which divides its interiorinto two chambers, 6 and 7. 'The diaphragm is provided with a valveseat'8. The flow of fluid through this seat from the chamber 6 to thechamber 7 'is controlled by a valve 9 mounted on a spindle 10. A seat 11for the lower part of the valve 9 is arranged in the chamber 7 and thevalve has passages through its interior so as to balance to a largedegree, if not wholly, the-fluid pressure on the valve when it is.closed. The lower end portion of the spindle 10 is enlarged to form'apiston 12 that slides in a cylinder 13 which communicates withthe,atmosphere by means of an opening 14 at one end so, that there is a'certain amount of pressure'tending at all times to close the valve.The@invention*is not limited, how ever, toi l'ialanced valyes' or tovalves having pistons similar to the piston 12 or to Verticallyjarranged valves. The upper end of the chamber 6 isclose'd by a cap 15havingon its outer side an open-ended cylinder 16.

The spindle 10 passes through the cap "15.

and carries a hollowpiston 17 which slides in the cylinder 16. A bonnet18 is also mounted on the top of the chamber 6 and supports a cylinder19 at its upper end. The cylinder has ports 20 and 21 at its ends. Apiston 22 slides in the cylinder. The piston rod 23 projects through thelower cylinder head and forms a part of the stem or spindle foroperating the valve under ordinary conditions.

A sleeve 24 is formed integral with orse- .cured to the lower end of therod 23. The

upper end of the spindle 10 enters the bore of this sleeve and has asplined connection therewith.

A locking device '25 rotatably mounted in the sleeve 24.- engagesajnotchin the spindle 10 therebv uniting the rod '23 and the spindle 10 so thatthey form a spindle or stem for the valve under ordinary or normalconditions and connect the piston 22 with the valve 9. The sleeve 24carries a flange 26 and between this flange and the piston 17 a spring27 is arranged which is under compression when the rod 23 and thespindle 10 are locked together and moves the spindle away from the rodwhen the lock is released. Th space between the piston 17 and the bottomof the cylinder 16 forms a sort of dash-pot,- the cushioning 'eflect' ofwhich is regulatedby a small. opening 28 leading from one side of thepiston-to the other. j

The valve is opened and closed under nor mal conditions by the action ofa suitable fluid under pressure on the piston 22, but

obviously the valve can. be manipulated by other mechanism such as ahand-wheel,

screw and nut, etc., if desired. In the form illustrated, the admissionand exhaust of pressure fluid. to and from the cylinder 19 is controlledby any suitable valve mechanism such asthat shown diagrammatically inFig. 2. The pipes 29 and 30 connect the ports 20 and 21 with-the valvemechanism.

A pipe 31 supplies fluid under pressure and for the sake of clearness asseparate-but they are preferably parts'of one valve and operall-exhaustpipe 32 conveys fluid away from ated by the same handle 35. Ihe valve 3&

is shown in a position to admit fluid from the pipe 31 through the pipe29 to the lower side of the piston 22 to move the pis- -ton upwardly andopen the valve while the valve 33 permits fluid from above the piston topass through the pipe 30 to the exhaust bine, etc., to which itsuppliesmotive fluid exceeds asafe or desirablef'limit. The en-' gine or turbineshaft 36 carries a ring 37 which rotates with the shaft and whose centerof mass is eccentric to-the axis of said shaft. be moved transversely ofthe shaft under the influence of centrifugal force, said movement beingopposed by a s ring 38. At some .iplredetermined speed 0 rotation, thecentri gal action of the ring overcomes the releasing a rod from saidtrigger The rod is then moved to the rightby the spring 41. The rightend of the rod 40 is connected to an arm 42 by which the locking device25 can be rotatedp when the rod 40 moves to the ri htythe device 25. isreleased-from thespindle l0 and the spring 27 pushes the valve 9downsuddenly to its closed position assisted-by any unbalancedpressurethere may be on the valve.

upper end ofthe spindle 10 remains within the end ofv the sleeve evenwhen the valve is closed. Themovement .of the valve is checkedas it'nears its'elosedposition by the cushioning action of the dash-pot formedby the piston 17 and the cylinder 16. The rod- 40 1s jointed at thepoint 43 to permit the outer end of the rod to move up and dowfiwiththesleeve and the lock as the valve is opened and closed under ordinaryconditions without disturbing the emerency'mechanism. Obviousl the valvecan e arranged to be tripped-by and instead of "by the mechanismillustrated, if so desired. After the valve has been tripped, it can ber'e-set for normal operation by forcing the piston 22,v rod 23 andsleeve 24: downwardly against the action of the spring 27 until the lock25'can be engaged with the notch in the stem 10, the rod40 againengaging the trigger or latch 39. The spring 38 returns the rin 37 tothe position shown when the speed talls'to normalagain. As soon as t emechanism is re-set as described, the

This ring is mounted so that it can spring and the ring'strikes atrigger 39,-

The sleeve 24- is made longjenough so that thevalve is ready foroperation, both as a throttle valve or stop valve was an emergencyvalve, and there are no additional parts to be set or released which ifforgotten by the attendant would prevent the valve from acting when thetrip mechanism is actuated. T'his desirable and essential resultisobtained by combining the coupling for the two parts of the valve stemand the locking device in one structure or member. The valve can bereadily opened and closed under normal conditions and can be closed fromany of its'open positions by the trip mechanism in an emergency orwhenever necessary for any reason.

In accordance with the provisions ofthe patent statutes, I havedescribed the principle of operation of my invention, together with theapparatus which I now consider to represent the best embodiment thereof;but I desire to have it understood that the apparatus shown is onlyillustrative and that the' by Letters Patent of the United States is 1.In combination, a valve, a divided stem for the valve, the ends of twoadjacent parts of the stem being in sliding engagement with each other,abutments on said parts, spring means arranged between the abutmentswhich tend to separate the parts of the stem, a device for normallylocking the parts of the stem together, means for moving the stem tonormally open and close the valve without varying the tension of thespring, and means for actuating said device under certain cond1t1onstorelease the parts of the stem and permit the spring means to move thevalve toward its closed position.

2. In combination, a valve having atendency to close, a casing for thevalve, a divided stem for the valve, one part of the stem carrying thevalve and being arranged in the casing with both of its ends projectingthrough the Walls of the casing, one end of said part being in slidingengagement with the end of the adjacent part of the stem, abutments onsaid parts outside of the casing, spring means arranged between theabutments which normally tends to separate the parts of the stem, adevice for locking the parts together in opposition to the action of thespring means, mechanism for normally moving-the stem axially to open andclose, the valve, and means for actuating said device to release thepart of the stem carrying the valve from the other part,

thereby permitting said spring means to move the valve toward its seat.

3. In combination a valve,a.divided stem for thevalve, there; beingabutments on; two adjacent parts. ofthe stem, a spring arranged betweenthe fabutments which tends to se arate said parts of. the stem, meansfor coup the partsl together, and a gjglevice acting on said means torelease the parts of the stem and permit the spring to separate them.4:. In combination, a valve, a stem for the 5 valve formed intwo partsand having abutments on said parts, there being a sleeve on the end ofone part with the interior of which the end of the second part isin'sliding engagement, a spring surrounding the stem and arrangedbetween the abutments which tends to separate the-parts of said stem, adevice for locking the sleeve and the second part of the stem together,means for normally opening and closing the valve 15 without varying thetension of. the spring, and means for actuating'said device to releasethe second part of the-stem from the sleeve to permit the spring toseparate the! parts ofsaid stem and close the valve under certainconditions.

5. In combinatioma valve, a casing for the valve, a stem for the valveformed in two parts, one of the parts having an abutment thereon and theother part carrying cylinder on the casing in which the piston isarranged to slide, a spring arranged between the abutment' and thepiston which tends to separate the parts of the stem, a de vice forlocking the parts of the stem together under normal conditions inopposition to the action of the spring, means for normally opening. andclosing the valve, and means for actuating said device to release theparts of the stem and close the valve suddenly under emergencyconditions, said piston and cylinder acting as a dashpot to retard thesudden movement of the valve before seating. I

6., In combination, a valve, a stem for the valve formed in two parts,there being a sleeve on thefend of one part with which the. end of thesecond part is in sliding engagement, means which tends to separate theparts of the stem, a locking device rotatably mounted in the sleeve atone side of the stem which normally engages the second part of the stemand acts in opposition to said means to prevent its sliding in thesleeve, and mechanism for rotating said dethe sleeve,

the valve and having a piston thereon, a

vice to release the parts ofr the stenrto the action of said means undercertain conditions. V j I 7 In combination, a valve, a stem for thevalve formed in two parts, there being a sleeve on the upper part'of thestem and the adjacent end of the lower part of the stem beihg splined insaidsleeve, an abutment on an abutment on the lower part of the stem, aspring arranged between'the abutments which tends to separate the partsof the stem, a device which normally holds the lower part of the stem inthe sleeve against movement by the spring, and means for actuating saiddevice to release said part to the action of the spring.

8. In-eombination, a valve, a stem for the valve that is formed in twoparts, one of said parts having a sleeve portion with which the otherpart is in sliding engagement, abutments on the parts of the stem,spring means arranged between the abutments which tends to separate saidparts, a locking device rotatably mounted in the sleeve portion at oneside of the axis of the stem' which normally engages the other part ofthestem and acts in opposition to said means to prevent its sliding inthe sleeve portion,

and mechanism for rotating the device to release the parts of the stemto the action of said means to thereby close the valve under certainconditions.

.9. In combination, a valve, adivided stem for the valve, there beingabutments on two adjacent parts of the stem, spring means arrangedbetweenthe abutments which tends to separate said parts, a device forlocking said parts together in opposition to the spring means, mechanismfor -moving the stem to open and close the valve under normal conditionswithout afiecting the tension of the spring, and means for releasingsaid.

device to permit the valve to close suddenly under emergency conditions.

In witness whereof, I have hereunto set my hand this 22d day of June1910.

LUDWIG CUBELIC.

Witnesses: g

J. TITMOLLER, FRIEDRICH GANZERT.

